136271731 has 2 divisors, whose sum is σ = 136271732. Its totient is φ = 136271730.

The previous prime is 136271719. The next prime is 136271747. The reversal of 136271731 is 137172631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136271731 - 2⁵ = 136271699 is a prime.

It is a super-2 number, since 2×136271731² = 37139969339472722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136271693 and 136271702.

It is not a weakly prime, because it can be changed into another prime (136271701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68135865 + 68135866.

It is an arithmetic number, because the mean of its divisors is an integer number (68135866).

Almost surely, 2^136271731 is an apocalyptic number.

136271731 is a deficient number, since it is larger than the sum of its proper divisors (1).

136271731 is an equidigital number, since it uses as much as digits as its factorization.

136271731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 31.

The square root of 136271731 is about 11673.5483465825. The cubic root of 136271731 is about 514.5985887672.

The spelling of 136271731 in words is "one hundred thirty-six million, two hundred seventy-one thousand, seven hundred thirty-one".